OF support for i2c bus drivers

This series of patches implements the framework needed by of_platform_driver i2c bus drivers. i2c-mpc is then converted to an of_platform_driver and i2c-cpm is added as new driver.

This is based on earlier work by Jon Smirl and Jean Delvare.

[PATCH1/7] i2c: Add support for device alias names
[PATCH2/7] i2c: Convert all new-style drivers to use module aliasing [PATCH3/7] i2c: OF helpers for the i2c API
[PATCH4/7] i2c: Convert PowerPC MPC i2c to of_platform_driver from platform_driver [PATCH5/7] i2c: Kill the old driver matching scheme
[PATCH6/7] i2c: adds support for i2c bus on Freescale CPM1/CPM2 controllers [PATCH7/7] [POWERPC] Add i2c pins to dts and board setup

Thanks,
Jochen